Korrex Hannover – Rollers diameter size… Uneven impression

We are dealing with an uneven impression (lighter inking towards the middle) printing on our Korrex Hannover—everything appears to be fine as long as we are manually inking the press by hand…

The packing seems fine, bed/level seems okay, now trying to figure out if the rollers are still even or shrunken/swollen and whether or not we need to replace them.

Should we need to replace the rollers, could anybody confirm the correct thickness/size? We have found a manual for the Korrex Nürnberg at Druckwerk in de Marge which mentions a diameter of 74 mm… but not sure if that is correct for the Hannover.